2 papers
gr-qc2025
From a quantum world to our classical Universe
Claus Kiefer
Modern cosmological theories invoke the idea that all structure in the Universe originates from quantum fluctuations. Understanding the quantum-to-classical transition for these fl…
gr-qc2024
Quantum theory of the Lemaitre model for gravitational collapse
Claus Kiefer, Hamid Mohaddes
We investigate the quantum fate of the classical singularities that occur by gravitational collapse of a dust cloud. For this purpose, we address the quantization of a model first…